10.10 - Electricy At Home

Question 1

electric current that flows in one direction only

Answer 1

Direct current (DC)

Question 2

current that changes direction along a wire a number of times per second.

Answer 2

Alternating current (AC)

Question 3

control switch that turns all the household circuits on or off

Answer 3

Main switch

Question 4

connection that provides a route for current to flow to the ground when an electrical appliance malfunctions. It is a safety device that helps to avoid the flow of current through a person using the appliance.

Answer 4

Earth socket

Question 5

device that can increase or decrease voltages for alternating current

Answer 5

Transformer

Question 6

device that changes alternating current to direct current

Answer 6

Rectifier

Question 7

safety wire that melts when too much current flows through it. Fuse wires are designed to melt at different currents.

Answer 7

Fuse

Question 8

safety device that breaks a circuit if the current suddenly exceeds a specified size. Circuit breakers can be reset.

Answer 8

Circuit breaker